I was mining STAK on suprnova and it shows 12-24 MH/s instead of 72.
Seems like all the pools have problems with lyra2v2... or alexis miner fakes the hashrate

The same shit.
Alexis-78 shows 63 MH for 1080 ti & 38 MH for 1070, while yiimp.masterhash.us report a much less.
Use CCminer-x64 2.2-dev bro, I'm getting 115 - 145mh/s with x4 gtx1060s and x1 gtx1070, alexis miner can't handle lyra2v2 for some reason.